A teenager who became an internet sensation after posting a video of herself covering her severe acne with make-up says she was overwhelmed by the kindness extended towards her by those who watched it.

Cassandra Bankson endured years of bullying over the acne which coats her face, neck, chest and back.

But the 19-year-old bravely decided to make a ten minute video, which she posted on YouTube, revealing how she is able to completely cover her spots using special make-up techniques.

Cassandra, of Danville, California, has seen her video viewed a colossal 7.5 million times, as self-conscious subscribers eagerly tune in to learn her secrets.

Scroll down for more pictures of Cassandra and to watch her video

Brave: Cassandra admits she wept before filming the video

The teenager opened the clip by confessing: “This is the most nerve-wracking thing I could do because it's my biggest insecurity.

"I am going to show you guys what I look like without makeup. It's awful."

Pointing to a made-up picture of her face, she adds: "Then I'm going to show you how I apply my foundation so that I can look like this."